Armstrong Fluid Technology 89975001-83702K Seal 321894-709 This 1-3/8" OD elbow is
Baker’s notes & crumb story
Description
Armstrong Fluid Technology 89975001 83702K Seal 321894 709 This 1 3 8" OD elbow is This 1 3 8" OD elbow is the exact same size as a 1 1 4" nominal plumbing fitting using a Lennox replacement part ensures the safety and operational integrity of the combustion air proving circuit